The radiation amount of a mobile phone for two half-hour periods per day is equal to ______ to an X-ray for ten seconds.
| A．expose | B．exposing | C．exposed | D．being exposed |
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Good luck to you, and _____ all your wishes come true.
| A．can | B．may | C．must | D．should |
He ran as fast as he could _____ to catch the bus.
| A．hope | B．to hope | C．hoping | D．hoped |
The system has been designed to give students quick and easy_____to the digital resources of the library.
| A．access | B．passage | C．way | D．approach |
I’m trying to break the _______ of getting up too late.
| A．tradition | B．convenience | C．habit | D．leisure |
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